In an experiment to learn if substance M can help restore memory, the brains of20 rats
Chapter 0, Problem 21.12(choose chapter or problem)
In an experiment to learn if substance M can help restore memory, the brains of20 rats were treated to damage their memories. The rats were trained to run amaze. After a day, 10 rats were given M and 7 of them succeeded in the maze;only 2 of the 10 control rats were successful. The z test for no difference againsta higher proportion of the M group succeeds has(a) z = 2.25, P < 0.02.(b) z = 2.60, P < 0.005.(c) z = 2.25, P < 0.04 but not < 0.02.
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